#include <iostream>
#include <stddef.h>

int main() {
    std::cout << "size_t = " << sizeof(size_t) << std::endl;
    std::cout << "unsigned int = " << sizeof(unsigned int) << std::endl;
    std::cout << "unsigned long = " << sizeof(unsigned long) << std::endl;
    std::cout << "decltype(sizeof()) = " << sizeof(sizeof(char)) << std::endl;
}
